Modernize usage of 'macOS' in doc and comments

Apple changed the spelling of its operating system again, to "macOS",
effective with macOS 10.12 Sierra (2016-09-20).  Change Emacs
documentation and comments to match this.  Stick with older OS
spellings ("OS X", "Mac OS X") when talking about older releases where
the older names are more correct.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/macfont.m b/src/macfont.m
index 04456283fa1..ed7c1e3bd7a 100644
--- a/src/macfont.m
+++ b/src/macfont.m
@@ -1,4 +1,4 @@
-/* Font driver on Mac OSX Core text.
+/* Font driver on macOS Core text.
    Copyright (C) 2009-2016 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
@@ -1005,7 +1005,7 @@ macfont_set_family_cache (Lisp_Object symbol, CFStringRef string)
 and those start with ".".  NULL means the cache has been invalidated.
 Otherwise, the value is CFArray of CFStrings and the elements are
 sorted in the canonical order (CTFontManagerCompareFontFamilyNames on
-OS X 10.6 and later).  */
+Mac OS X 10.6 and later).  */
 
 static CFArrayRef macfont_available_families_cache = NULL;
 
@@ -4042,7 +4042,7 @@ mac_register_font_driver (struct frame *f)
 void
 syms_of_macfont (void)
 {
-  /* Core Text, for Mac OS X.  */
+  /* Core Text, for macOS.  */
   DEFSYM (Qmac_ct, "mac-ct");
   macfont_driver.type = Qmac_ct;
   register_font_driver (&macfont_driver, NULL);